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Covered Bridges Today : ウィキペディア英語版 | Covered Bridges Today
''Covered Bridges Today'' is a non-fiction book on the architecture of covered bridges in the United States. The book was written by Brenda Krekeler and published by Daring Books in 1989. ''Covered Bridges Today'' is a frequently cited source on the topic of covered bridges and serves as a record of numerous covered bridges that have since been dismantled or demolished since the book's publication. Krekeler's text includes 412 covered bridges in fourteen states with a complete record of all 142 covered bridges in Ohio during its writing in 1986 and 1987. The work has been utilized in numerous citations by later publications including Historic American Engineering Record surveys and ''New England's Covered Bridges: A Complete Guide'', ''Indiana Covered Bridges'' and ''Covered Bridges in Virginia''. == Background == Covered bridges are timber-truss bridges with a roof and siding which, in most covered bridges, create an almost complete enclosure.〔(【引用サイトリンク】title=Covered bridge )〕 The purpose of the covering is to protect the wooden structural members from the weather. Uncovered wooden bridges have a life span of only 10 to 15 years because of the effects of rain and sun. As of 2014, the United States has more than 800 extant covered bridges with more than 10,000 lost and historical bridges recorded by the National Society for the Preservation of Covered Bridges.〔(【引用サイトリンク】 title=World Guide to Covered Bridges )〕 Krekeler became interested in studying covered bridges, their lore and their history, while in college. Krekeler obtained her master's degree in Historical Geography from the University of Cincinnati.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Covered Bridges Today」の詳細全文を読む
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